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74ACTQ544 Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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74ACTQ544 Datasheet(HTML) 6 Page - Fairchild Semiconductor |
6 / 9 page www.fairchildsemi.com 6 AC Electrical Characteristics for ACTQ Note 16: Voltage Range 5.0 is 5.0V ± 0.5V Note 17: Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs within the same packaged device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design. Not tested. AC Operating Requirements for ACTQ Note 18: Voltage Range 5.0 is 5.0V ± 0.5V Capacitance VCC TA = + 25°CTA = − 40°C to + 85°C Symbol Parameter (V) CL = 50 pF CL = 50 pF Units (Note 16) Min Typ Max Min Max tPLH Propagation Delay tPHL Transparent Mode 5.0 1.5 5.5 7.5 1.5 8.5 ns An to Bn or Bn to An tPLH Propagation Delay 5.0 1.5 6.5 8.5 1.5 9.0 ns tPHL LEBA, LEAB to An, Bn tPZH Output Enable Time tPZL OEBA or OEAB to An or Bn 5.0 1.5 8.0 10.0 1.5 10.5 ns CEBA or CEAB to An or Bn tPHZ Output Disable Time tPLZ OEBA or OEAB to An or Bn 5.0 1.0 5.5 7.5 1.0 8.0 ns CEBA or CEAB to An or Bn tOSHL Output to Output 5.0 0.5 1.0 1.0 ns tOSLH Skew (Note 17) VCC TA = + 25°CTA = − 40°C to + 85°C Symbol Parameter (V) CL = 50 pF CL = 50 pF Units (Note 18) Typ Guaranteed Minimum tS Setup Time, HIGH or LOW 5.0 3.0 3.0 ns An or Bn to LEBA or LEAB tH Hold Time, HIGH or LOW 5.0 1.5 1.5 ns An or Bn to LEBA or LEAB tW Latch Enable, B to A 5.0 4.0 4.0 ns Pulse Width, LOW Symbol Parameter Typ Units Conditions CIN Input Capacitance 4.5 pF VCC = 5.0V CPD Power Dissipation Capacitance 80.0 pF VCC = 5.0V |
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